1. Department of Health Sciences, Africa University, Mutare, Zimbabwe
2. National Institute of Health Research Malaria Section, Harare, Zimbabwe
3. Biomedical Research and Training Institute, Harare, Zimbabwe
4. College of Health Sciences, University of Zimbabwe, Harare, Zimbabwe
5. Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA
6. Johns Hopkins Malaria Research Institute, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA
7. Division of Clinical Pharmacology and Infectious Diseases, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA